Some kids grew up getting certain things only once in a while. Dessert on Sundays, never Tuesdays. New shoes in September, when school started, and not again until they’d been outgrown. One soda, at a restaurant, as a treat — never a fridge stocked with it at home. To anyone looking in, it can seem a little sad. The other kids had dessert whenever, a closet that seemed to refill itself, soda on tap. Next to that, the once-a-week kid looks like they went without.